# P3.5 Kinetic theory and gases Flashcards Preview

## Physics extension edexcel > P3.5 Kinetic theory and gases > Flashcards

Flashcards in P3.5 Kinetic theory and gases Deck (16)
1
Q

What are the three states of matter?

A

Solids, liquids and gases

2
Q

What form of matter has the strongest bonds between particles?

A

Solids

3
Q

What is the temperature of a gas a measure of?

A

The average kinetic energy of the particles in the gas

4
Q

What happens to temperature as the kinetic energy of particles increases?

A

It increases

5
Q

What is pressure?

A

Force per unit area

6
Q

What is pressure measured in?

A

pascals, (Pa)

7
Q

Why does increasing temperature increase the pressure of a gas?

A

It makes the particles move faster, which means that:

• there are more collisions with the walls of the container
• the particles hit the container with a greater force
8
Q

How do you calculate pressure?

A

Force / area

1 N/ m^2

9
Q

What temperature is absolute zero in degrees?

A

-273^C

10
Q

What temperature is absolute zero in Kelvins?

A

0K

11
Q

What happens to pressure when a gas reaches absolute zero?

A

There is no more pressure because the particles stop moving

12
Q

How do you convert a temperature from Kelvin to Celsius?

A

-273

13
Q

How do you convert a temperature from Celsius to Kelvin?

A

+273

14
Q

What is the average kinetic energy of particles in a gas directly proportional to?

A

The Kelvin temperature of a gas

15
Q

What happens to pressure as the volume of a gas increases at a constant temperature?

A

It decreases

16
Q

What equation is used to calculate initial or final temperature, pressure and volume?

A

(P^1 x V^1) / T^1 = (P^2 x V^2) / T^2